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Seasonal studies on alginate and its composition II: Turbinaria conoides (J.Ag.) Kütz. (Fucales, Phaeophyceae)

  • Sundararaju Jothisaraswathi
  • Bakthavachalam Babu
  • Ramasamy Rengasamy
Original Article

Abstract

The alginates extracted from ‘leaf’, ‘stem’ and entire thallus of Turbinaria conoides (J.Ag.) Kütz. were investigated for their viscosity and biochemical constituents namely, β-D-mannuronic acid (M-block}), α-L-guluronic acid (G-Block) and alternating sequences of β–D-mannuronic acid and α-L-guluronic acid (MG-block). Substantial seasonal variation was recorded with high yield of alginate during premonsoon. The yield of alginate was maximum in ‘leaf’ region. In contrast to this, viscosity and G-block were maximum in the ‘stem’ region. A significant positive correlation was observed between viscosity and G-block}. The ratio of guluronic: mannuronic acid was also assessed. Low levels of M/G ratio were recorded in the ‘stem’ region followed by ‘leaf’ and entire thallus.

Keywords

Co-polymer M-block MG-block G-block Seasonal variation Viscosity 

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Copyright information

© Springer Science + Business Media B.V. 2006

Authors and Affiliations

  • Sundararaju Jothisaraswathi
    • 1
  • Bakthavachalam Babu
    • 1
  • Ramasamy Rengasamy
    • 1
  1. 1.University of MadrasMadrasIndia

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